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MQTT CLient run into error 9401

7/11/2018 7:21 PM	Rate (0)
NMS Posts: 1 Rating: (0)	Hi Yu-Wen Tang, I have downloaded and run MQTT CLient Application on s7 1200 with firmware v4.2 but I run into error 9401 which means 'MQTT is not connected' , but I can absolutely connected and interact with my Broker via Laptop. I did as mentioned in your specification. I will appreciate highly if you could show me a solution for that. Actually, I'm really a freshman in PLC. Thank you ------------------------------------------------------------------------------------------ Split from Cannot connect PLC to the online mosquitto broker via internet connection.
NMS Posts: 1 Rating: (0)	Last edited by: Jen_Moderator at: 7/12/2018 10:40:56 AM New subject after splitting
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7/31/2018 5:21 PM	Rate (0)
Yu-wen Tang Silver Member Joined: 10/7/2009 Last visit: 3/6/2025 Posts: 266 Rating: (96)	Dear NMS, Error ID 16#9104 (shouldn't be 16#9401) "MQTT is not connected" means that you must first connect to a MQTT broker and then you can perform PUBLISH/SUBSCRIBE/UNSUBSCRIBE/PING commands. Best regards, Yu-wen

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